I suggest you review this material in your classnotes and textbook. I will show the approach for (b):

Pr(-1.5 < Z < 1) = 1 - Pr(Z < -1.5) - Pr(Z > 1).

Now note that Pr(Z > 1) = 1 - Pr(Z < 1) and Pr(Z < -1.5) = Pr(Z > 1.5) = 1 - Pr(Z < 1.5) by symmetry. Now use your tables to look up the values.